EGR System - Gasoline

• Description
• Operation
  • Vacuum Modulated (Ported Vacuum) EGR System
  • Exhaust Back-Pressure Modulated EGR System
    • Notes
    • Positive Back Pressure EGR Valve
    • Negative Back-Pressure EGR Valve
  • Pulse Width Modulated EGR System
• Maintenance
  • EGR Valve Cleaning
    • Notes
    • One-Piece Valve
    • Two-Piece Valve
• Component Testing
  • Positive Back-Pressure EGR Valve
  • Vacuum Modulated & Negative Back-Pressure EGR Valve
  • Pulse Width Modulated EGR Valve